Analytical Investigation on Catenary Action in Unbonded Prestressed Concrete Beam-Column Subassemblages
Publication: Journal of Structural Engineering
Volume 149, Issue 8
Abstract
One reinforced concrete (RC) and four prestressed concrete (PC) beam-column subassemblages with various tendon profiles were designed and tested to investigate the effect of prestressed tendon profiles on the progressive collapse response of PC frames. An analytical model was developed to evaluate the PC frames’ catenary action (CA) response by identifying the fracture of longitudinal reinforcement and prestressed tendons in beams. The effect of the bond mechanism on the rupture strain of reinforcement was considered. Then, the proposed model was validated using experimental and simulation results. Finally, parametric studies were performed based on the calibrated model. Test results indicate that the prestressed tendon profile significantly impacts the CA response of PC frames against progressive collapse. The analytical model can effectively reflect the effect of the prestressed tendons on the CA resistance and displacement of PC frames.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study was supported by the National Natural Science Foundation of China (Grant No. 51890901) and the Natural Science Foundation for Distinguished Young Scholars of Hunan Province (Grant No. 2020JJ2003). These supports are gratefully acknowledged. Any opinions expressed in this paper are those of the writers and do not reflect the views of the sponsoring agencies.
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Published In
Journal of Structural Engineering
Volume 149 • Issue 8 • August 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jul 25, 2022
Accepted: Mar 22, 2023
Published online: May 17, 2023
Published in print: Aug 1, 2023
Discussion open until: Oct 17, 2023
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